Vehicle brake



B. 0. FREDERICK.

VEHICLE BRAKE? APPLICATION FILED MAR. I. I92I.

Patented Ill-1y 25, 1922.

' NETE@ S'lA'llES Parser f y BERNHARD o. aannemen, onHrBBme, MINNESOTA.

VEHICLE Blame! Application` filed March 1, 19,241. Serial No. 443,750.

To all whom t may concern.'

Be it known that LBERNHARD 0,. FRED- nnicn, a citizen of the United States, resid ing at l'libbing, in the countyoi St. Louis and State of Minnesota, have invented certain new and useful improvements yin Vehicle Brakes, or which the following is a specification, reference being had therein to the accompanyingl drawing. Y

This invention relates to auxiliary brakes 'for vehicles rsuch as automobiles'or the like and has special reference toa brake principally actuated by the rotation of the vvheels of the vehicle and one uihich when so actuated will tend to raise the Wheels off of the ground.

The principal object of the invention is to provide a simple 'device of this character which Will result in as effectual a as possible and one thatfwill prevent skidding of the automobile when the brake is applied under abnormally slippery conditionsf` Other objects and advantages ywill Vappear in the further description thereof. l

In the accompanying drawing'forming part of'this application `and ink which like reference characters indicate likeparts:

Figure 1 isa central vertical sectional View through one end of the rear axle of an automobile t Figure 2 is a side elevation of Figure 1 looking outwardly in respect to the chassis of the automobile; and

FigureB isa reduced elevation ol the brake as applied to the rear end of an automobile and looking outwardly in respect thereto.

l represents the driving aXle a vehicle to which the Wheel 2 is non-rotatably attached as is customary inthe rear portion ci? an automobile. To the inside of 'the Wheel hub flange indicated at 3 is securely fas tened in any desired manner as by through bolts 4f the internal or female portion 5 of a cone clutchv While the male portion of said clutch is carried upon the axle of the car and illustrated at 6, the same having formed integral therewith the gear Wheel 7, it having cogs only upon the forward side thereof as illustrated in Figure 2. The gear and cone portion of the clutch is mounted upon a sleeve 8 carried upon the axle housing adjacent the Wheel hub and is held from normally engaging that portion of the clutch upon the latter by a suitable spiral spring 9 installed intermediate ot the internal annular shoulder of the gear and cone and the annular r'im or lange 10 formed -rupon the innerfend of the sleeve 8. Back of the 1-.vheel and cone 6 7 andr intermediate'oi' it Aand the housingmember l1'v is installed al rotatable cam disc member Ll2, said member graduated in thickness ciicum'lferential'lv to properly coincide vivith the similarly 'shaped inner hub face of the housing' yl1.v l l By this construction it will be seen lthat the spring 9 Will keep the cone 4clutch'back away from engagement with .its cooperative female ymember against the housing 1l. and .vhen the cam Amember l2 is partially rotated in the proper direction itw'ill 'force cooperative engagement with the'tivo parts ol 'the clutch. l

- A vertically disposed elongated fabricated metaliirame 13 is mounted over the wheel 7, it having slots in both side members thereof approximately the .vidth'f'l the gear ivheel and in which the opposite peripheral edgesv of the wheel are housed or surrounded to prevent lateral movement ol:l the frame independently of the gear, and the inner Vlace of the slot of the forward one di said mein'- Srwieatioxef Lettere Patent Patented July 25, i922;

bers is toothed as at 37 to form 'a' vvertically K i disposed rack in Which the cogs bi!r trl/ie'gear 7 are permanently meshed so that by a partial rotationoi' saidgear the frame 13 'will be thrust downwardly vwiththelslipe' lll at the lower end thereof engaging the, ground At 15 I have illustratedafrod leading y from the cam lever 16 to which itis pivotally attached as at 1T to atransverse shaft 1S mounted in the chassis 19 of the vehicle and to which it is attached by means of a suitable upstanding crank arm 20.

This shaft 1S is designed to be rotated by the service brake lever 22 which is mounted upon a suitable shaft 23 and has an arm i4 extending obliquely therefrom which is connected to a suitable crank arm on the shaft 18 by the link 25.

The ends of the shoe 14 extend both fore and. aft oli' said members 13 of the brake beam and are suitably braced. therefrom as by links indicated at 26 and the shoe is so united to the lowerL end ot the Jframe that it may be readily removed for repair or reneWal. At the forward side member of the braking frame as at 27, I have pivotally attached a rod 28 leading forwardly of the vehicle to a suitable attaching member shown at 29 wherev it is pivotally connected to prevent the frame from being drawn backwardly when engaging the ground during the forward motion of the car. This brake is not supposed to be actuated by the haelt.- ward motion of the car, but to provide for its use at such time a radially disposed arm 34 is formed integral with the inner side of the gear wheel 7 and extends upwardly therefrom. To this `arm is attached a flexible member 30 which leads to the depending crank arm 3l carried upon the transverse shaft 32 which is manually operated by the emergency lever 2l, the flexibility of said member being to provide for free action of the Wheel?" by the forward motion of the car when desired. Thus when desired. as for example during a backward motion of the car, the brake may be thrown into action by a forward rotation of the gear 7 in dependently of the wheels of the ear.

The braking frame 13 together with its shoes is normally held in its uppermost position free from engagement with the ground and held apart therefrom by a` suitable horizontally disposed leaf sprine-` attached to the under side of the areuately shaped upper end thereof, the inner end of the springebeing attached to the chassis of the vehicle in any desired manner. The. spring is provided with suiiicient resiliency to permit of the entire4 frame being depressed by the action of the rotation of the wheel5 as previously described.

It is to be understood that while l have shown one embodiment of my invention that certain of the details thereof may be modi` ed without departing from the spiritof the inventiomprovided they are kept within the scope of the following claims.

l. The combination with a vehicle having vertically suspended ground engaging shoes adjacent the wheels of said vehicle and Ameans cooperatively engageahle intermediate of the wheels andi' shoe whereby forward motion of the former may be employed in 3. An auxiliary brake for an automobile Comprising in. combination a cone clutrh7 one member of which. is attached to the in nermost side of the huh of a wheel ol" the hicle, the other memlgier of the clutch having a rotative cog member attached thereto and normally held stationary on the vehicle adjacent said whe'el, a vertically suspended frame having one side member thereof in constant engagement. with the cogged por tion of the clutcln a ground engaeingfshoe attached to the lower end of the frame. meansfor yieldably holding the trame in its uppermost normal position and means for manuallyT causin the. two parts of the clutch to become yengaged whereby the rotation o' the wheel will cause the shoe toberome eugaged with the ground and simultaneously liftthe wheel from engagement therewith.

4. The combination with a vehicle of the class described. of a vertically operated ground engaging shoe adjacent each rear wheel thereof,a 'friction clutch intermediate of each shoe and its respective wheel where by the rotation of the latter may be causefl to apply the former. aud a manually rontrolled rotatable cam cooperatively connected with each clutch for engaging; and disen gaeing same. I y

ln testimony whereof l hereunto a'liix my signa-ture in the presence of two witnesses.

BERNHARD O. FREDERCK. litnesses S. C. BRoNsoN. S, Gro. STnvnNs. 

